[1] During the Reichsgau's short existence, Poles and Jews in that area were subjected by Nazi Germany to extermination as "subhumans".

[7] The German occupiers considered the Danzig and Polish citizenships as naught, due to the de facto abolition of these two states.

Mass-murder sites in the region include: Nazi policy to exterminate the Polish and Jewish populations was conducted in several phases; the first stage occurred in September 1939.

[13] During the Winter of 1939/40 between 12,000 and 16,000 people were murdered at Piaśnica by Einsatzkommando 16, units of the 36th Regiment of SS, and members of the Selbstschutz, a militia force made up of Poles of German ethnicity.

[14]Jews did not figure prominently among the victims in West Prussia, as the area's Jewish population was small and most had fled before the Germans arrived.

[15] In areas where Jewish families or individuals remained, a "shameful situation" was proclaimed, and Nazi authorities expected the Selbstschutz to remedy it through "direct action".

[16] In August 1943 around 500 Jews from a camp in the Pomeranian Voivodeship were sent to Auschwitz, out of which 434 were immediately killed upon arrival [17] It is estimated that, by war's end, up to 60,000 people had been murdered in the region,[18] and up to 170,000 expelled.

[21] Danzig-West Prussia was divided into three government regions (Regierungsbezirk), with the name-giving capital cities of Bromberg, Danzig and Marienwerder.

In March 1945, the region was reclaimed by Poland, and the Nazi governor, Albert Forster, was later sentenced to death and executed for crimes against humanity.

The German population (including wartime settlers, Nazis, and military officials) either fled or was expelled in accordance with the Potsdam Agreement.